Information processing device, information processing method, and program for the same

ABSTRACT

An information processing device includes: a storage unit; a first display control unit; and a demanding unit. The storage unit that stores attribute data representing specified attribute of contents and category data representing a category of the attribute correlated to each other. The first display control unit that provides controls for displaying information for a selected attribute and for displaying, in a categorized state, information for related attributes correlated to the same category as that of the attribute on a correlation display screen. The demanding unit that demands data search by referring to the correlated attribute selected corresponding to information selected from among those displayed on the correlation display screen to an information provision device.

CROSS REFERENCES TO RELATED APPLICATIONS

This application is a continuation of and claims the benefit of priorityfrom allowed U.S. application Ser. No. 14/956,434, filed Dec. 2, 2015,which is a continuation of U.S. application Ser. No. 14/575,620, filedDec. 18, 2014, now U.S. Pat. No. 9,268,847, issued Feb. 23, 2016, whichis a continuation of U.S. application Ser. No. 14/168,909, filed Jan.30, 2014, now U.S. Pat. No. 8,954,855, issued Feb. 10, 2015, which is acontinuation of U.S. application Ser. No. 11/777,614, filed Jul. 13,2007, now U.S. Pat. No. 8,683,335, issued Mar. 25, 2014, which claimsthe benefit of priority from Japanese Patent Application No.2006-223893, filed Aug. 21, 2006, the entire contents of each of whichare incorporated herein by reference.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to an information processing device, aninformation processing method, and a program for the same, and morespecifically to a method and a device making it possible to easilyretrieve information for a desired artist from a contents-providingserver on a display screen for displaying correlation between artistsappearing in contents as well as to a program for the same.

2. Description of the Related Art

Recently, there has been becoming more and more popularized a method foracquiring music data into a personal computer (PC) by ripping musicpieces recorded in a CD (Compact Disc) or downloading desired musicpieces from a music distribution server by making use of a musicdistribution service or the like, and people enjoy contents such as theacquired music data with a PC or a portable device (PD).

Recently, a PC or a PD is equipped with a storage unit capable ofstoring a large amount of data therein, and a user can have various anddiversified contents recorded in a PC. When the contents recorded in aPC or in a PD includes those not preferred by a user, however, it istroublesome for the user to retrieve contents just fitting to the user'smood from the various and diversified contents.

To overcome the problem, the present applicant has introduced into themarket a product enabling easy search of contents fetched into a PC or aPD by a user. As described, for instance, in Non-patent Document 1,“Detailed information for “Walkman Series A”, “Artistlink””, by makinguse of the product, a user can acquire artist link information relatingto the fetched music data (namely information for a classificationrepresenting an attribute of artists included in the contents via anetwork. Then the user can have a screen representing relation betweenthe artists displayed on a monitor, and select contents to be listenedto next time according to the user's preference.

This artist link information can be acquired from a user's friend or aserver providing the information. When a user acquired the artist linkinformation, for instance, from the user's friend and then tries to hasa screen representing relations between the artists, sometimes thereoccurs the case in which information for an artist not relating to thecontents stored in the user's PC or PD is displayed. With the additionalinformation, the user can know presence of and relations between theartist(s) not relating to the contents stored in the user's PC or PD.

SUMMARY OF THE INVENTION

In the related art, however, even when a user acquires the artist linkinformation, for instance, from the user's friend, sees a screen showingrelations between artists, and know presence of and relations betweenthe artists not relating to the contents stored in the user's PC or PD,if the users wants to acquire contents relating to any of the artists,the user is demanded to search for contents relating to the desiredartist by intentionally accessing a music piece distribution server orthe like.

In other words, even when artist information not relating to thecontents stored in a user's PC or PD is displayed on a screen showingrelations between artists, the user may not directly access a musicpiece transmission server for retrieving information for the artist notrelating to contents stored in the user's PC or PD.

The present invention was made in the light of the circumstances asdescribed above, and there is a need for the present invention toprovide a device and a method enabling a user to retrieve informationfor an artist not relating to contents owned by the user from a contentsproviding server on a display screen for displaying relations betweenartists appearing in contents.

An information processing device in an embodiment of the presentinvention includes: a storage unit, a first display control unit, and ademanding unit. The storage unit that stores attribute data representingspecified attribute of contents and category data representing acategory of the attribute correlated to each other. The first displaycontrol unit that provides controls for displaying information for aselected attribute and for displaying, in a categorized state,information for related attributes correlated to the same category asthat of the attribute on a correlation display screen. The demandingunit that demands data search by referring to the correlated attributeselected corresponding to information selected from among thosedisplayed on the correlation display screen to an information provisiondevice.

The information processing device in the embodiment of the presentinvention further includes a second display control unit that controlsdisplays on a search result screen according to a result of search sentfrom the information provision device in response to a request from thedemanding unit.

The information processing device in the embodiment of the presentinvention, the demanding unit demands data search by referring to theattribute corresponding to information selected from among thosedisplayed on the correlation display screen to information providingdevice.

The information processing device in the embodiment of the presentinvention, further includes a contents storage unit that storescontents, contents of the related attribute is stored in the contentsstorage unit.

The information processing device in the embodiment of the presentinvention, further includes a contents storage unit that storescontents, contents of the related attribute is not stored in thecontents storage unit.

There is a need for the present invention to provide a method ofprocessing information with an information processing device having astorage unit that stores attribute data representing a specifiedattribute of contents and category data representing a category of theattribute correlated to each other, the method includes the steps of:providing and demanding. The providing step controls for displayinginformation for a selected attribute and for displaying, in acategorized state, information for related attributes correlated to thesame category as that of the attribute on a correlation display screen.The demanding step demands data search by referring to the attributecorresponding to information selected from among those displayed on thecorrelation display screen.

There is a need for the present invention to provide a program formaking an information processing device including a storage unit thatstores attribute data representing specified attribute of contents andcategory data representing a category of the attribute correlated toeach other execute the step of: providing and demanding. The providingstep controls for displaying information for a selected attribute andalso for displaying, in a categorized state, information for relatedattributes correlated to the same category as that of the attribute on acorrelation display screen. The demanding step demands data search byreferring to the attribute corresponding to information selected fromamong those displayed on the correlation display screen.

In an embodiment of the present invention, data search for an artist notrelating to the contents which a user does not own can be performed on adisplay screen on which relations between artists relating to attributesof the contents are displayed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view illustrating an example of a configuration of acontents provision system according to an embodiment of the presentinvention;

FIG. 2 is a block diagram illustrating an example of a hardwareconfiguration of a PC shown in FIG. 2;

FIG. 3 is a block diagram illustrating an example of a functionalconfiguration of the PC shown in FIG. 1;

FIG. 4 is a view illustrating an example of a configuration of an ALMdatabase shown in FIG. 3;

FIG. 5 is a view illustrating an example of a configuration of an artistlink correspondence table shown in FIG. 4;

FIG. 6 is a view illustrating an example of a configuration of acontents information database shown in FIG. 3;

FIG. 7 is a flow chart illustrating an example of a processing performedin the contents provision system shown in FIG. 1;

FIG. 8 is a flow chart illustrating another example of a processingperformed in the contents provision system shown in FIG. 1;

FIG. 9 is a view illustrating an example of a configuration of an artistlink map editing screen;

FIG. 10 is a flow chart illustrating a processing for editing artistlink information;

FIG. 11 is another flow chart illustrating a processing for editingartist link information;

FIG. 12 is a further flow chart flow chart illustrating a processing forediting artist link information;

FIG. 13 is a flow chart illustrating a processing directly performed bythe PC1 shown in FIG. 1 for searching contents from a content server;

FIG. 14 is a view illustrating an example of a search URL;

FIG. 15 is a view illustrating an example of a result of data searchsent from a server;

FIG. 16 is a view illustrating an example of a display address URLdecided according to a result of data search;

FIG. 17 is a view illustrating an example of a configuration of a searchresult screen;

FIG. 18 is a view illustrating another example of a configuration of thesearch result screen; and

FIG. 19 is a view illustrating still another example of a configurationof the search result screen.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Embodiments of the present invention are described below, and thecorrespondence between the requirements in the present invention andembodiments described in the specification of in relation to thedrawings is, for instance, as described below. The followingdescriptions are provided for insuring that embodiments supporting thepresent invention are described or illustrated in the specification orthe drawings. Therefore, even if there are embodiments described in thespecification or illustrated in the drawings but not described as thosecorresponding to the requirements in the present invention, it shouldnot be understood that the embodiments do not corresponds to therequirements in the present invention. On the contrary, even if there isam embodiment described as that corresponding to any specificrequirement in the present invention, it does not mean that theembodiment does not correspond to another embodiment other than thatspecific embodiment.

An information processing device in one embodiment of the presentinvention (e.g., a PC1 shown in FIG. 1) includes a storage unit, a firstdisplay control unit, and a demanding unit. The storage unit (e.g., anartist correspondence table 83 shown in FIG. 4) stores attribute data(e.g., an artist ID) representing a 10 specific attribute of contents(e.g., a name of an artist) and category data (e.g., an artist group ID)representing a category of the attribute (e.g., an artist group name) inthe correlated state. The first display control unit (e.g., an artistlink display processing section 51 shown in FIG. 3) provides controlsfor displaying information for selected attribute (e.g., a base pointicon 251 shown in FIG. 9) and categories correlated to the attribute(e.g., folder icon 252-1 shown in FIG. 9) and also displayinginformation for correlated attributes correlated to the category for theattribute described above (e.g., correlation icons 253-1 and 253-2 shownin FIG. 9) in the categorized state on a correlation display screen(e.g., an artist link tree screen 213 shown in FIG. 9). The demandingunit (e.g., an artist search control section 55 shown in FIG. 3) thatdemands data search by using the correlated attributed for selectedinformation displayed on the correlation display screen to aninformation providing equipment (e.g., a contents server 3 shown in FIG.1).

The information processing device can furthermore include a seconddisplay control unit (e.g., a basic display processing section 56 shownin FIG. 3) that controls displays on a search result screen (e.g., asearch result screen 301 shown in FIG. 17) corresponding to a result ofsearch sent from the information providing equipment.

The information processing device can furthermore include a contentsstorage unit that stores contents therein (e.g., a contents file storingsection 73). In this configuration, contents for the correlatedattributes may be stored in the contents storage unit.

The information processing device can furthermore include a contentsstorage unit (e.g., the contents file storing section 73 shown in FIG.3) that stored contents therein. In this configuration, contents for thecorrelated attributes may be demanded to be stored in the contentsstorage unit.

A method and a program for processing information in one embodiment ofthe present invention are used in the information processing devicehaving a storage unit that stores therein attribute data representingspecified attribute of contents and category data representing acategory of the attribute correlated to each other in the categorizedstate. The method includes the step of providing controls for displayinginformation for a selected attribute and information for categoriescorrelated to the attribute and also for displaying information for theattributed correlated to the same category of the attribute in thecategorized state on the correlation display screen (e.g., a step S104shown in FIG. 10) and demanding, to the information processing device,data search by using the selected correlation attribute for which theinformation displayed on the correlation display screen is selected(e.g., a step S203 shown in FIG. 13).

Embodiments of the present invention are described below with referenceto the related drawings.

FIG. 1 illustrates an example of a configuration of a contents providingsystem according to an embodiment of the present invention.

Personal computers 1-1 and 1-2 are connected to a network 2 representedby Internet. In the following description, when any specific definitionis not necessary, the personal computers 1-1 and 1-2 are simply referredto as PC1. Although two units of PC1 are shown in this embodiment, anynumber of PCs can be connected to the network 2.

Connected to the network 2 are a contents server 3 for providingcontents such as moving images or music pieces to the PC1 and a detailedmeta server 5. Any numbers of the contents servers 3 and the detailedmeta servers 5 may be attached to the network 2. In the example shown inFIG. 1, a case in which contents for music pieces is provided will bedescribed.

The contents server 3 has a contents database (DB) 4 with contents datafor music pieces or the like (sometimes referred to as contents data inthe following description) and metadata corresponding to the contentsstored therein. The metadata includes a plurality of attributes such as,for instance, a name of an album in which the contents is included, aname of an artist playing or providing the contents, a genre (category)of the contents, a music tone, rhythm, a ranking value (parameter) forthe contents in the market.

When the contents server 3 receives a demand for data search from thePC1, the contents server 3 performs data search for the data in thedatabase 4, and sends a result of data search to the PC1. When thecontents server 3 receives a demand for display from the PC1, thecontents server 3 sends the demanded image data to the PC1. In addition,the contents server 3 performs authentication of a user registered forprovision of contents in response an access from the PC1 for demandingcontents. The contents server 3 retrieves content data and metadata forthe contents demanded by the user from among various and diversifiedcontents stored in the contents database 4, and sends the contents dataand metadata to the PC1 with authenticated user via the network 2. Acontents provider may provide contents data for various and diversifiedcontents recommended to the user.

The detailed metadata server 5 has a contents details metadata database(DB) 6 in which detailed metadata for various and diversified contentstransacted in the market is stored. The detailed metadata includes acontents ID (Identifier) which is an identifier for contents, metadataappended to contents data (e.g., an artist name or a genre), categorydata representing categories for classification of similar contents(e.g., subgenre).

The subgenre is information for one or more genres other than the genresin the metadata for contents A, yet presumably most proximate (similar)to the genre of the contents A. Contents in the metadata can beclassified to a plurality of subgenres similar to a genre P. In otherwords, contents is classified to only one genre in the metadata, but maybe classified to a plurality of subgenres in the metadata. Morespecifically, each contents classified as subgenre may be similar toeach other. For instance, the detailed metadata includes, for instance,a contents ID for contents, an artist name appearing in the contents,and names of subgenres to which similar contents is classified.

The detailed metadata server 5 sends, of the detailed metadata stored inthe detailed metadata database, detailed metadata for a contents ID forthe contents acquired in the PC1 via the network 2.

The PC1 accesses the contents server 3 using client software such as aWeb browser, and records contents data or metadata received from thecontents server 3, or encodes the contents data received from a CD(Compact Disc) according to a predefined scheme (e.g., ATRAC3plus(trademark)), and records the encoded data together with the metadata.The metadata is acquired from a CD or other metadata server not shown.

Then the PC1 generates artist link information relating to artistsappearing in the contents based on received detailed metadata, recordsthe generated artist link information, and displays artist linkinformation specified by a user. The PC1 edits the recorded anddisplayed artist link information according to the user's operations,selects a desired artist for data search from the contents server 3, orgenerates a play list in which an order of reproduced contents isdescribed, and reproduces the recorded contents data by making use ofthe information described above.

The PC1-1 and 1-2 are detachably connected to portable devices (PD) 7-1and 7-2, which are portable recording/reproducing device and mounted viaa USB (Universal Serial Bus) cable or the like to the PCs, respectively.When it is not necessary to describes the PD7-1 and 7-2 discretely, thedevices are referred to simply as PD7 in the following description. ThePC1 transfers the recorded contents data, metadata, edited artist linkinformation, the generated play list or the like to the connected PD7.

The PD7 records various and diversified contents data, metadata thereof,the contents data, the edited artist link information, the generatedplay list, and the like, and reproduces the contents data by making useof the contents data, metadata, artist link information, the play listand the like recorded as described above. Furthermore, when a removablemedium 22 with various and diversified contents files previouslyrecorded therein (refer to FIG. 2) is connected thereto, the PD7 canreproduce contents data and the like recorded in the removable medium22.

The configuration shown in FIG. 1 illustrates a case in which the PD7acquires contents files from the contents server 3 via the PC1. However,other configurations are also allowable in which the PD7 is directlyconnected to the network 2 or acquires data directly from the contentsserver 3 or the detailed metadata server 5, for instance, by means ofwireless communications.

FIG. 2 illustrates an example of a hardware configuration of the PC1.

A CPU (Central Processing Unit) 11 executes various types of processingaccording to a program stored in a ROM (Read Only Memory) 12 or loadedfrom a storage section 18 to a RAM (Random Access Memory) 13. Also datafor execution of the various types of processing is stored in the RAM 13according to the necessity.

The CPU 11, the ROM 12, and the RAM 13 are connected to each other via abus 14. Also connected to the bus 14 is an input/output interface 15.

Connected to the input/output interface 15 are an operation inputsection 16 including a keyboard, a mouse, or the 20 like; a displaysection 17 which is a display including a CRT (Cathode Ray Tube), an LCD(Liquid Crystal Display) and the like; a speaker 18; a storage section19 based on a hard disk or the like; and a communication section 20including a modem, a terminal adaptor, a USB interface, and the like.The communication section 20 executes the communication process via thenetwork 2 or a USB cable.

A diver 21 may be connected to the input/output interface 15 accordingto the necessity. Furthermore, a removable medium such as a magneticdisk, an optical disk, a magneto optical disk, or a semiconductor memorymay be connected to the input/output interface 15 according to thenecessity, and a computer program read out from the removable medium isinstalled in the storage section 19 according to the necessity.

Although not shown in FIG. 2, also each of the contents server 3, thedetailed metadata server 5, and the PD7 is configured with a computerhaving the basically same configuration as that of the PC1 shown in FIG.2. Therefore, in the following description, the configuration shown inFIG. 2 is cited also as a configuration of the contents server 3, thedetailed metadata server 5, and the PD7.

When the CPU 11 executes various types of program, the computer shown inFIG. 2 functions as any of the PC1, the contents server 3, the detailedmetadata server 5, or the PD7 shown in FIG. 1. In this case, theprograms can previously be recorded in a ROM 12 as a recording mediumincorporated in the computer shown in FIG. 2 or in the storage section19. Alternatively, the programs can temporally or permanently be stored(recorded) in the removable medium 22 such as a magnetic disk, anoptical disk, a magneto optical disk, or a semiconductor memory and canbe provided as packaged software.

Furthermore, the program is not only installed in the computer shown inFIG. 2 from the removable medium 22 as shown described above, but alsomay be transferred from a downloaded site via an artistic satellite fordigital satellite broadcasting to the computer shown in FIG. 2 in thewireless communications, or may be transferred via the LAN (Local AreaNetwork) and the network 2 to the computer shown in FIG. 2 forinstallation in wired communication.

FIG. 3 is a block diagram showing an example of a functionalconfiguration of the PC1. The functional blocks shown in FIG. 3 arerealized when contents of a music piece is registered and a program isexecuted for selecting and listening the registered contents.

The functional blocks shown in FIG. 3 includes an ALM database 71, acontents information database 72, and a contents file storing section73. These 71, 72 and 73 include an artist link display processing 51, anartist link GUI control section 52, an artist link processing controlsection 53, a database access processing section 54, an artist searchcontrol section 55, a basic display processing section 56, a basic GUIcontrol section 57, a network communication control section 58, anetwork communication section 59, a PD (Portable Device) transfercontrol section 60, a PD (Portable Device) communication section 61, andthe storage section 19.

The artist link display processing 51 generates GUI images constitutingan artist link map editing screen 201 (FIG. 9) used for editing orreferring to the artist link information under controls by the artistlink GUI control section 52 and based on the artist link information,and displays the artist link map editing screen 201 or the likeconfigured with the generated images on the display section 17.

The artist link GUI control section 52 controls the artist link displayprocessing 51 to generates GUI images for the artist link map editingscreen 201 or the like based on the artist link information from theartist link processing control section 53 or to update the artist linkmap editing screen 201 or the like based on a feedback from the artistlink processing control section 53. Furthermore the artist link GUIcontrol section 52 makes the artist link processing control section 53execute processing for artist link information by inputting an operationsignal corresponding to a user's operation relating to the artist linkmap editing screen 201 via the operation input section 16.

The artist link processing control section 53 executes processing forthe artist link information stored in an ALM databse 71 in response tocontrol by the artist link GUI control section 52 or data from thedatabase access processing section 54, or the processing using theartist link information.

When detailed metadata is supplied from the database access processingsection 54, the artist link processing control section 53 generatesartist link information based on the detailed metadata, supplies thegenerated artist link information to the database access processingsection 54 for registration in the ALM database 71.

As described above, the detailed metadata includes a contents ID ofcontents, names of artists appearing in the contents, names of subgenresto which similar contents is classified, and the like, and therefore acorrespondence between the artist names in the contents and thesubgenres can be acquired from the detailed metadata. Then the artistlink processing control section 53 determines that the artistsclassified (belonging) to the same subgenres are relating to each other,and generates the artist link information in which an artist group iscorrelated to the artists.

In other words, the artist link information is information correlatingartists belonging to the same artist group, and can be edited accordingto the necessity. Therefore, when an artist A belongs is a member of anartist B (group), when the artist A was a member of the artist B(group), when the artist A has some connected with an artist C, or whenthe artist A provides some music pieces to an artist D, it is determinedthat the artists A, B, C, and D have some connections with each other.In this case, a particular artist group is prepared, and the artists arecorrelated to the artist group.

Therefore, the artist link processing control section 53 performseditorial works such as addition or deletion of the artist linkinformation managed in the ALM database 71 by the database accessprocessing section 54 under control by the artist link GUI controlsection 52, and also returns the updated artist link informationreflecting a result of the editorial works to the artist link GUIcontrol section 52.

The artist link processing control section 53 acquires a name of anartist specified by a user from the artist link information managed inthe ALM database 71 by the database access processing section 54 undercontrol by the artist link GUI control section 52, and execute datasearch from the contents server 3 using the acquired artist name bycontrolling the artist search control section 55.

The database access processing section 54 executes read/write operationsfor the data stored in the ALM database 71, the contents informationdatabase 72, and the contents file storing section 73 according toinstructions from the artist link processing control section 53, the PD(Portable Device) transfer control section 60, the network communicationcontrol section 58, or other related sections.

The artist search control section 55 generates search demand data fordemanding data search from the contents server 3 by using an artist namefrom the artist link processing control section 53, and has thegenerated search demand data sent through the network communicationcontrol section 58. Furthermore, the artist search control section 55receives a result of data search from the contents server 3 from thenetwork communication control section 58, decides data specifying adisplay site in the contents server 3 (such as a URL (Uniform ResourceLocator as the display site), and sends data specified the decided sitefor display to the network communication control section 58.

The basic display processing section 56 generates GUI images for basicfunctions of a particular program, and has a screen including thegenerated GUI images or images corresponding to screen data suppliedfrom the contents server 3 in the display section 17 under controls bythe basic GUI control section 57.

The basic GUI control section 57 generates GUI images for basicfunctions or updates a screen or the like including the GUI images forthe basic functions based on a feedback from the PD transfer controlsection 60 and the network communication control section 58.Furthermore, the basic GUI control section 57 inputs and supplies anoperation signal corresponding to a user's operation for the GUI imagefor basic function via the operation input section 16 to the PD transfercontrol section 60, the network communication control section 58, orother related sections, or supplies images corresponding to screen datasupplied from the contents server 3 via the network communicationcontrol section 58 on a monitor constituting the output section 17.

The network communication control section 58 controls the networkcommunication section 59 in response to the operation signal from thebasic GUI control section 57 to access the contents server 3 or thedetailed metadata server 5, or to send search demand data of data for adisplay site from the artist search control section 55 to the contentsserver 3. Furthermore, the network communication control section 58supplies screen data supplied from the contents server 3 to the basicGUI control section 57, supplies a result of search acquired from thecontents server 3 to the artist search control section 55, or suppliedcontents data and metadata acquired from the contents server 3 or thedetailed metadata acquired from the detailed metadata server 5 to thedatabase access processing section 54.

The PD (Portable Device) transfer control section 60 makes the databaseaccess processing section 54 read out data specified to be transferred(such as contents data, metadata, edited artist link information, or aplay list in which a sequence of contents reproduction is described) inresponse to an operation signal from the basic GUI control section 57and send the data to the PD7 controlling the PD communication section61.

The PD communication section 61 sends data supplied from the PD transfercontrol section 60 via the communication section 20 as well as a USBcable not shown to the PD7. The network communication section 59accesses the contents server 3 or the detailed metadata server 5 via thenetwork communication section 59, the a communication section 20, andthe network 2 and supplies screen data, a result of search or contentsdata or metadata and a detailed metadata acquired from the detailedmetadata server 5 to the network communication control section 58.

Artist link information for various artists is stored in the ALMdatabase 71. The artist link information stored in the ALM database 71is generated by the artist link processing control section 53 based onthe detailed metadata acquired from the detailed metadata server 5, andis subjected to editorial works such as addition or deletion in responseto a user's operation.

Information concerning contents (contents information) is stored in thecontents information database 72. The contents information database 72stores therein information such as contents names, contents file names,history data of times of reproduction and history log data for transferto a PD in the correlated state. The contents information registered inthe contents information database 72 is displayed, for instance, as mylibrary data, on the screen. Also the play list information preparedaccording to the user's operation (including a play list name and acontents ID to which the play list belongs) is also stored in thecontents information database 72. Also a subgenre name for detailedmetadata may be stored as one of metadata in the contents informationdatabase 72 in correspondence to the contents ID.

Contents data is stored, as a contents file managed in the contentsinformation database 72, in the contents file storing section 73.

FIG. 4 illustrates an example of a configuration of the ALM database 71.

In the example shown in FIG. 4, the ALM database 71 includes an artistgroup (AG) list table 81, an artist list table 82, and an artist linkcorrespondence table 83.

The artist group list table 81 includes an artist group ID(Identification), an artist group name, and attribute information. Theartist group name is a name representing a category for classificationof artists correlating to each other, and can freely be changed or newlyadded by a user. When the artist group name is prepared based on thedetailed metadata, the subgenre name is registered as it is as theartist group name.

The attribute information represents by whom the artist group isprepared. For instance, the user A represents that the artist group nameis prepared by a user of the PC1, and system represents that the artistgroup is prepared based on detailed metadata by the artist linkprocessing control section 53. The attribute information prepared by auser is processed in preference to that prepared, for instance, bysystem.

The artist group list table 81 shown in FIG. 4 stores therein theinformation that an artist group ID for the artist group “AG1” is“AGID_1” and attribute information thereof is “system”, the informationthat an artist group ID for the artist group “AG2” is “AGID_2” andattribute information thereof is “user A”, and the information that anartist group ID for the artist group “AG3” is “AGID_3” and attributeinformation thereof is “user A”. In other words, in the artist grouplist table 81, artist group IDs and an artist group names are stored inthe correlated state. The artist group “AG1” is prepared by the artistlink processing control section 53, while the artist groups “AG2” and“AG3” are prepared by the user of the PC1.

The artist list table 82 includes artist IDs and artist names. In theartist list table 82 shown in FIG. 4, the artist ID of “AT1” iscorrelated to “AID_1”, the artist ID of “AT2” to “AID_2”, the artistname of “AT3” to the “AID_3” respectively. Thus the artist IDs and theartist names are stored in the correlated state.

The artist link correspondence table 83 includes artist group IDs andartist IDs. In the artist link correspondence table 83 shown in FIG. 4,the artist group ID “AGID_1” includes the artist ID “IAD_1”, the artistID “AID_2”, and the artist ID “AID_3”; the artist group ID “AGID_2”includes the artist ID “AID_2” and the artist ID “AID_4”. Thus theartist group IDs and the artist IDs are stored in the correlated state.

Namely, in the artist link correspondence table 83, one artist group IDcan include a plurality of artist IDs, and also a plurality of artistgroups can include the same artist ID.

As described above, by referring to the artist link information,including the artist group list table 81, the artist list table 82, andthe artist link correspondence table 83, it is understood that theartist AT1 with the artist ID of “AID_1”, the artist AT2 with the artistID of “AID_2”, and the artist AT3 with the artist ID of “AID_2” areincluded in the artist group AG1 with the artist group ID of “AGID_1”.Furthermore it is understood that the artist AT2 with the artist ID of“AID_2” and the artist AT4 with the artist ID of “AID_4” are included inthe artist group AG2 with the artist group ID of “AGID_2”.

Namely, the artist link information suggests that the artist AT1 withthe artist ID of “AID_1”, artist AT2 with the artist ID of “AID_2”, andthe artist AT3 with the artist ID of “AID_3” have some connection witheach other, and also that the artist AT2 with the artist ID of “AID_2”and the artist AT14 with the artist ID of “AID_4” have some connectionswith each other.

It is to be noted that artists with the corresponding contents notregistered in the contents information database 72 are also included inthe artists registered in the ALM database 71. The configuration isdescribed with reference to FIG. 9, but anyhow the artist linkinformation can be edited and also additional artist link informationcan be acquired from the outside and added to the artist linkinformation.

FIG. 5 illustrates a more detailed configuration of the artist linkcorrespondence table 83. In the example shown in FIG. 5, the artist linkcorrespondence table 83 includes order information and attributeinformation in addition to the artist group IDs and artist IDs shown inFIG. 4.

The order information is an order of priority referred to, for instance,when the artist link information is transferred to the PD7 having asmall memory capacity as compared to that of the PC1, or when artistsincluded in an artist group are displayed side by side in the displaysection 17, and the order information can be changed by a user. Forinstance, the configuration is allowable in which artist at only upper20 ranks in the order of priority among those included in an artistgroup are transferred to the PD7.

The attribute information included in the artist link correspondencetable 83 indicates by whom an artist is added to an artist group. ASdescribed above, the user A indicates that the attribute information isprepared by a user of the PC1, and “system” indicates that the attributeinformation is prepared by the artist link processing control section 53based on the detailed metadata. Furthermore the user B indicates thatthe attribute information is prepared by a user of another PC1. Thisattribute information is referred to as an initial value of the orderinformation.

Namely, to treat a user's desire more preferentially than detailedmetadata, an initial value of each other information is decided by theattribute information. More specifically, the attribute information istreated in the following order of priority: User A (user of thePC1)>User B (the user's friend) >“system”.

The artist link correspondence table 83 shown in FIG. 5 stores thereinartist IDs included in the artist group AG1 with the artist group ID of“AGID_1”. Namely the order information of “1” and the attributeinformation of “user A” are stored in the correlated state in the artistAT1 with the artist ID of “AID_1”. Furthermore the order information of“2” and the attribute information of “user B” are stored in thecorrelated state in the artist AT2 with the artist AT2 with the artistID of “AID_2” included in the artist group AG1 with the artist group IDof “AGID_1”. In the artist AT3 with the artist ID of “AID_3” included inthe artist group AG1 with the artist group ID of “AGID_1”, the orderinformation of “3” and the attribute information of “system” are storedin the correlated state.

It is understood that, among the artists included in the artist groupAG1 with the artist group ID of “AGID_1”, a priority of the artist withthe artist ID of “AID_1” is the highest, while a priority of the artistAT3 with the artist ID of “AID_3” is the lowest. Furthermore, the artistlink information indicating that the artist AT1 is included in theartist group AG1 is prepared by the user A, the artist link informationindicating that the artist AT2 is included in the artist group AG1 isprepared by the user B, and the artist link information indicating thatthe artist AT3 is included in the artist group AG1 is prepared by the“system”.

The case of the artist group AG1 is described below more specificallywith reference to the attribute information in the artist group listtable 81 shown in FIG. 1. For instance, after the artist group AG1 andthe artist link information indicating that the artist AT3 is includedin the artist group AG1 are prepared by the artist link processingcontrol section 53, the artist link information indicating the artistAT1 is included in the artist group AG1 is added through an editorialwork performed by the user of the PC1. Then the artist link informationis fetched a file including the artist link information for a user ofother PC1 (although the mechanism is described in detail below), andwhen the information is merged, the artist link information indicatingthe artist AT2 is included in the artist group AG1 is added.

Furthermore in the artist link correspondence table 83, the orderinformation of “2” and the attribute information of “user A” are storedin the correlated state in the artist AT2 with the artist ID of “AID_2”included in the artist group AG2 with the artist group ID of “AGID_2”.The order information of “1” and the attribute information of “user A”are stored in the correlated information in the artist AT4 with theartist ID of “AID_4” included in the artist group AG2 with the artistgroup ID of “AGID_2”.

It is understood that, of the artists included in the artist group AG2with the artist group ID of “AGID_2”, a priority of the artist AT4 withthe artist ID of “AID_4” is set at the highest order, while the artistAT2 with the artist ID of “AID_2” is set at the lowest order.Furthermore, it is understood that the artist link informationindicating that the artist AT2 is included in the artist group AG2 isprepared by the user A, and also the artist link information indicatedby the artist AT4 is included in the artist group AG2 is prepared by theuser A.

FIG. 6 illustrates an example of the contents information table storedin the contents information database 72.

The contents information table includes contents ID each identifyingcontents (a music piece), contents names, name of albums in which thecontents is included, name of artists who play or provide the contents,names of genres to which the contents belongs, names of contents file ofcontents respectively, and attribute information for the contents suchas a flag indicating that the contents has been reproduced. Thisreproduction-completed flag is once rest to “0” when the contents isshuffled and then again reproduced in a random manner, and then “1” isset in the reproduction-completed flag for the contents selected to bereproduced. With this configuration, it is possible to prevent contentsonce reproduced from being selected for reproduction again.

For instance, the contents information table shown in FIG. 6 storestherein the contents information indicating that a contents name of thecontents with the contents ID of “TID_1” is “Song1”, the album name is“Album1”, the artist name is “Artist AT1”, the genre name is “Pops”, thecontents file name is “Song1.oma”, and the reproduction-completed flat“0”.

The contents information table furthermore stores therein the contentsinformation indicating that a contents name of the contents with thecontents ID of “TID_2” is “Song2”, the album name is “Album1”, theartist name is “Artist AT1”, the genre name is “Pops”, the contents filename is “Song2.oma”, and the reproduction-completed flag is “0”. Thecontents information table also stores therein the contents informationindicating that a contents name of the contents with the contents ID of“TID_3” is “Song3”, the album name is “Album2”, the artist name is“Artist AT2”, the genre name is “Rock”, the contents file name is“Song3.oma”, and the reproduction-completed flag is “0”.

Although not shown in FIG. 6, as described above, a tempo, a tune, andrhythm of contents, chronological data (such as on-sale date), rankinginformation, history data of times of reproduction, history log data fortransfer to a PD, and play list name and the like are also stored incorrespondence to the contents ID. The ranking information includes suchdata as ranking of sales in the market, ranking of user access to thecontents server 3, and the like.

For instance, when the contents is image contents, a title of a program,a title of a moving picture, and chronological data such as a releaseddate) are included in the contents information database 72. Furthermore,an assessment value for rating the contents prepared in response touser's operation in the operation input section 16 can be stored ascomments metadata in the contents information database 72. Preparationof the assessment value may be performed either before or after thecontents is viewed.

Next descriptions are provided, by referring to the flow chart shown inFIG. 7, for a process performed in the PC1 for acquiring contents datafrom the contents server 3, acquiring detailed metadata from thedetailed metadata server 5, and generating artist link information.

In the following description, it is assumed that a contents list isdisplayed in the display section 17. A user demands an access to thecontents server 3 by specifying a desired contents using a mouse or thelike constituting the operation input section 16 of the PC1.

The basic GUI control section 57 inputs a signal corresponding to auser's operation via the operation input section 16, and supplies thesignal to the network communication control section 58. In step S1, thenetwork communication control section 58 controls the networkcommunication section 59 to access the contents server 3 for demanding acontents desired by the user. The network communication section 59accesses the contents server 3 via the communication section 20 and thenetwork 2 to demand the contents desired by the user.

When the communication section 20 in the contents server 3 is accessedby the PC1, the communication section 20 sends, in step S11,authentication screen data for demanding a user ID (Identification) anda password previously registered therein via the network 2 under thecontrols by the CPU 11 for utilizing the contents provision system.

The network communication section 59 in the PC1 receives, in step S2,authentication screen data from the contents server 3 via thecommunication section 20 and the network 2, and supplies the receivedauthentication screen data via the network communication control section58 to the basic GUI control section 57. The basic GUI control section 57controls and makes the basic display processing section 56 display theauthentication screen corresponding to the authentication screen datafrom the network communication control section 58 on the display section17. The user inputs a user ID and a password using a mouse or the likeconstituting the operation input section 16 in response to theauthentication screen displayed in the display section 17.

The basic GUI control section 57 inputs the user ID and the password viathe operation input section 16 in response to the user's operation, andsupplies the received user ID and the password to the networkcommunication control section 58. The network communication controlsection 58 controls and makes the network communication section 59 sendthe user ID and the password from the basic GUI control section 57 tothe contents server 3. The network communication section 59 sends theuser ID and the pass word via the communication section 20 and thenetwork 2 to the contents server 3.

The communication section 20 in the control server 3 receives the userID and the password from the PC1, and supplies the received user ID andthe password to the CPU 11. In step S12, the CPU 11 authenticates theuser of the PC1 based on the user ID and the password received from thecommunication section 20, and then proceeds to step S13. In step S13,the communication section 20 reads out contents data and metadata forcontents desired by the user from among various and diversified contentsstored in the contents database 4, and sends the contents data and themetadata read out as described above via the network 2 by controllingthe communication section 20.

The network communication section 59 in the PC1 receives, in step S4,the contents data and the metadata from the contents server 3 via thecommunication section 20 and the network 2, supplies the receivedcontents data and metadata via the network communication control section58 to the database access processing section 54 to stores the contentsdata and the metadata in the contents file storing section 73 and in thecontents information database 72 respectively. Namely, the databaseaccess processing section 54 stores the contents data as a file in thecontents file storing section 73, and also registers the stored contentsfile name, metadata, and the like as contents information in thecontents information database 72. Herein, information for the contentsregistered in the contents information database 72 is displayed as mylibrary on the screen.

In step S5, the network communication control section 58 controls andmakes the network communication section 59 access the detailed metadataserver 5 and demand detailed metadata for the contents acquired from thecontents server 3. The network communication section 59 accesses thedetailed metadata server 5 via the communication section 20 and thenetwork 2, sends a contents ID for the contents stored in the PC1, anddemand detailed metadata for the contents.

When the communication 20 in the detailed metadata server 5 is accededby the PC1, the CPU 11 authenticates the user in step S21. When usingthe detailed metadata server 5 for the first time, at first userregistration is demanded. Therefore, when a user of the PC1 has beenregistered, the CPU 11 authenticates the user of the PC1, procedes tostep S33, reads out, of the various and diversified contents stored inthe contents details metadata database 6, detailed metadata for thecontents ID desired by the user, and controls and makes thecommunication section 20 send the read-out detailed metadata via thenetwork 2. When the user has not been registered, user registration isdemanded to the user.

In step S6, the network communication section 59 in the PC1 receivesdetailed metadata from the detailed metadata server 5 via thecommunication section 20 and the network 2, and supplies the receiveddetailed metadata to the network communication control section 58. Thenetwork communication control section 58 controls and makes the databaseaccess processing section 54 correlate the detailed metadata to thecontents, store the detailed metadata in the contents informationdatabase 72, and also supply the detailed metadata to the artist linkprocessing control section 53.

In step S7, the artist link processing control section 53 generatesartist link information based on the detailed metadata from the detailedmetadata server 5, and controls and makes the database access processingsection 54 store the generated artist link information in the ALMdatabase 71.

The detailed metadata includes, for instance, a content ID for contents,genre information, sub-genre information, artist name, and the like. Thedetailed metadata is not limited to information for genres, and may beinformation for further classification of other metadata (such as“Tempo” indicating Bpm of contents, “Major” indicating whether a tune ofthe contents is major or miner, “RythmRatio (ratio of rhythm)”indicating whether rhythm of the contents is percussive or quiet.Further, other metadata may also be “HiMid (high frequency area)”indicating whether a diapason of the contents is high or low, “year”indicating a year when the contents was released (put into the market),“ranking” indicating a ranking of accesses by users). The analysis datafor the contents may be used as the detailed metadata. The analysis datameans data obtained by analyzing a tempo of contents, a general tune ofcontents (major or miner), rhythm of contents (a use rate of percussioninstruments, and other parameter of each contents.

The artist link processing control section 53 treats the sub-genre as anartist group, correlates the sub-genre to an artist group ID, registersthe sub-genre in the artist group list table 81, and registers an artistof contents in the artist lest table 82 correlated with the artist ID.The artist link processing control section 53 furthermore registers eachID in the artist link correspondence table 83 so that names of artistsincluded in contents classified to the sub-genre is included in theartist group corresponding to the sub-genre.

When the sub-genre has been registered as an artist group, artists withthe contents classified to the sub-genre are added to the registeredartist group.

As described above, in the PC1, artist link information is preparedbased on the detailed metadata acquired from the detailed metadataserver 5, and the prepared artist link information is stored in the ALMdatabase 71.

The description above assumes a case in which detailed metadata isacquired when the PC1 acquires contents data, but also the configurationis allowable in which the contents information database 72 is searchedwhen the PC1 is activated, or at a predetermined time interval and thedetailed metadata not having been fetched into the PC1 is acquired.

An example of the processing in the contents provision systemillustrated in FIG. 1 for the transfer of the data from PC1 to PD7 isdescribed by referring to a flow chart in FIG. 8. The PD7 includes, asin the PC1, the artist link display processing section 51 and thedatabase access processing section 54, the ALM database 71 configured inthe recording section 19, the contents information database 72, and thecontents file storing section 73, though not shown.

PD7 is connected to the USB cable (not shown) via the PC1, and thetransfer button for specifying, for example, the data transfer to thePD7, is displayed on the display section 17 of the PC1. The user, byusing the mouse constituting the operation input section 16 of the PC1,click the transfer button, and selects the contents to be transferred tothe PD7.

The basic GUI control section 57, by the input of the operation signalscorresponding to the user's operation via the operation input section16, and provides the signals to the PD communication section 60. In steps51, the PD communication section 60 controls the database accessprocessing section 54, and responding to the operation signals from thebasic GUI control section 57, reads out the data for the contentsdesired by the user from the ALM database 71, the contents informationdatabase 72, and the contents file storing section 73.

The PD transfer control section 60 controls the database accessprocessing section 54, and enables the read out of the data for thecontents desired by the user. The database access processing section 54refers to the contents information database 72, reads out the data forthe contents desired by the user (metadata, for example), provides themetadata to the PD transfer control section 60, reads out, through thecontents file name included in the metadata, the contents file stored inthe contents file storing section 73, and provides the data (or the datafor the contents) to the PD transfer control section 60.

When transferring the contents including the play list, the contents,the transfer of which is completed, of the status is identified by, forexample, confirming the history log data for transfer to PD in thecontents information database 72. Thus, the completion of the transferis confirmed._1n this case, the data for the contents are not read out,and the play list is exclusively transferred.

The PD transfer control section 60, controls the database accessprocessing section 54, and enables the read out of the artist linkinformation corresponding to the artist names in the contents desired bythe user read out from the contents information database 72 from the ALMdatabase 71. The database access processing section 54 refers to theartist table 82 and the artist link correspondence table 83, reads outthe artist group ID of the artist name for the contents desired by theuser, reads out the artist group name corresponding to the artist groupID, then, from the artist group list table 81, reads out the artistgroup name corresponding to the artist group ID, reads out the data forthe artist link information, and provides the data to the PD transfercontrol section 60.

In step s52, the PD transfer control section 60 enables the transfer ofthe data for the contents read out form the database access processingsection 54 (data for the contents, metadata, and artist linkinformation) to the PD communication section 61. In the step, PDtransfer control section 60, as described above, based on the orderinformation in the artist link correspondence table 83, enables thetransfer of the information for the artists having the priority in thetop 20, exclusively. In response to the above, PD communication section60 transfers the data for the contents which the user demands totransfer via the communication section 20 and the USB cable to the PD7.

In step s61, the communication section 20 in the PD7, via the USB cable,receives the data for the contents from the PC1, and provides the datato the database access processing section 54. In step s62, the databaseaccess processing section 54 in the PD7 stores the data for the contentsand the metadata in the contents file storing section 73 and thecontents information database 72, respectively, and stores the artistlink information to the ALM database 71 in the PD7.

The database access processing section 54, stores the contents as filesto the contents file storing section 73, registers the contents ID,contents file name, metadata, and the like as contents information tothe contents information database 72, and registers the artist linkinformation from the PC1 to the ALM database 71.

As described above, the artist link information is stored in the ALMdatabase 71, in the PD7 as well. Therefore, the editing process and thelike in the PC1 as described below are executed in the PD7 as

FIG. 9 illustrates an example of a display screen displayed on thedisplay section 17.

The display screen shown in FIG. 9 is divided to an area which isswitched to other display screen in response to a user's operation, andto an area which is not switch and also in which a basic functiondisplay screen 202 is typically displayed. In the example shown in FIG.9, an artist link map editing screen 201 is displayed in the area whichcan be switched to other display screen. Namely, the basic functiondisplay screen 202 follows controls by the basic display processingsection 56, while the artist link map editing screen 201 followscontrols by the artist link display processing section 51.

The artist link map editing screen 201 is largely divided to an artistlist screen 211, an artist group list screen 212, and an artist linktree screen 213. As for the arrangement, the artist list screen 211 andthe artist group list screen 212 are provided side by side under theartist link tree screen 213.

Provided in an upper portion of the artist link tree screen 213 are anartist link editing terminate button 214 for returning a screen displayfrom the artist link map editing screen 201 to a screen for reproduction(for instance, a screen showing only the artist link tree screen 213),and a button 215 for returning to a preceding screen. In addition,provided between the artist link tree screen 213 and the artist listscreen 211 or the artist group list screen 212 is a splitter bar 216moved in the vertical direction for changing percentages displayed areasof artist link tree screen 213, the artist list screen 211, and theartist group list screen 212.

A result of the task for editing artist link information performed onthe artist list screen 211 as well as on the artist group list screen212 is immediately reflected to a display on the artist link tree screen213. Furthermore, also an instruction of selection by a user or a resultof the task for editing artist link information is immediately reflectedto the artist group list screen 212.

Each of the screens is described in detail below. A list of the artistnames (AT1 to AT6) stored in the artist list table 82 is displayedtogether with the artist icons. The artist icon correlated to the artistAT5 (sometimes referred to as an icon for the artist AT5 in thefollowing description) is displayed with a color different from those oficons for the other artists. The different color indicates that contentsdata for the artist AT5 is not stored in the contents file storingsection 73, and that information for the contents has not beenregistered in the contents information database 72. A cursor 221indicating selection by a user is displayed above the icon for theartist AT4.

In the lower portion of the artist list screen 211, the button foradding the artist 222 for adding the new artist to the artist list table82, the button for deleting the artist 223 for deleting the artistselected by the cursor 221 from the artist list table 82, and the artistlink search button 224 for enabling the display of the artists linkinformation, in which the artist selected by the cursor 221 isconfigured as starting artist to the artist link tree screen 213, arearranged. In the right side portion of the artist list screen 211, thescroll bar 225 for scrolling the artist list displayed on the screen 211is arranged.

Between the artist list screen 211 and the artist group list screen 212,the button for adding the artist group 231 for adding the artistselected by the cursor 221 in the artist list screen 211 to the artistgroup selected in the artist group list screen 212 is arranged.

In the artist group list screen 212, the list of the artist group storedin the artist group list table 81 (in the example, the artist group AG2and AG3) is displayed with the respective folder icons. The folder iconrespective to the artist group AG2 (referred as the folder icon for theartist group AG2, hereinafter) is displayed in a color different fromother artist groups. The display is for representing the fact that theartist included in the artist group AG2 is configured as the startingartist, and the artist link information is displayed on the artist linktree screen 213. On the icon for the artist group AG2, the cursor 241 isdisplayed, for representing the fact that the group is selected by theuser.

In the artist group list screen 212, the folder icon is displayed as aclosed folder, in the default configuration. By clicking the closedicon, the opened icon is displayed, the information in the artist linkcorrespondence table 83 is referred, and the icon for the artistincluded in the respective artist group is displayed in the openedfolder icon. In the example illustrated in FIG. 9, the folder icons forthe artist groups AG2 and AG3 are opened, and the icons for the artistsincluded in each artist group are displayed respectively to the orderinformation in the artist link correspondence table 83.

In the example illustrated in FIG. 9, the icons for the artists AT2,AT3, and AT5 included in the artist group AG2 are displayed in thefolder for the artist group AG2, and the icons for the artists AT2, AT4,and AT5 included in the artist group AG3 are displayed in the folder forthe artist group AG3. The artist groups other than the artist group AG3are controlled, but there is not enough displaying space in the example,so the artist groups are not displayed in the artist group list screen212, and for example, by the user's operation of the scroll bar 246 andthe like, the group is displayed on the artist group list screen 212.

In the artist group list screen 212, through the operation of the mousecomposing the operation input section 16 and the like, the order of theartists included in each artist group can be modified, enabling theorder of the artists on the artist link tree screen 213 to berespectively modified. Thus, the priority of the artists included in theartist group corresponding to the artist link correspondence table 83(or the order information) can also be modified.

In the lower portion of the artist group list screen 212, the button foradding the artist group 242 to the artist group list table 81 as a newartist group is arranged. Furthermore, the button for deleting theartist group selected by the cursor 241 form the artist group list table81 or for deleting the artist selected by the cursor 241 from therespective artist group, and the fetch button 244 for including datawritten out to the XML (Extensible Markup Language) file, and the writeout button 245 for the write out of the artist link information for atleast one artist group selected by the cursor 241 are arranged. In theright side portion of the artist group list screen 212, the scroll bar246 for scrolling the artist group list displayed on the screen 212 isarranged.

On the artist link tree screen 213, in response to the user's operation,the artist link information for the starting artist is displayed as thetree format.

More specifically, in the artist link tree screen 213, the starting icon251 for the representation of the starting artist on the left sideportion, the folder icons 252-1 and 252-2 for the representation of theartist group including the starting artist on the center portion, andthe co-relational icons 253-1 and 253-2 for the related other artistincluded in the focused artist group in the artist groups including thestarting artist on the right side portion are displayed. Between thestarting icon 251 and the folder icons 252-1 and 252-2, the line forrepresenting the link for relating the icons is displayed. The line isdisplayed for representing the link for relating the folder icon 252-1and the co-relational icons 253-1 and 253-2 as well.

The folder icons 252-1 and 252-2 are not distinguished from each otherunless necessary and are referred simply as the folder icon 252,hereinafter. The co-relational icons 253-1 and 253-2 are notdistinguished from each other unless necessary and are referred simplyas co-relational icon 253.

In the artist link tree screen 213, as described above, the artist groupis displayed so that the user can identify the parameter for therelation of the starting artist and the co-relational artist. When thereis a plurality of the artist groups including the starting artist, aplurality of folder icons 252 are displayed. When there is a pluralityof the co-relational artist are included in the artist group, aplurality of the co-relational icons 253 are displayed.

In the example illustrated in FIG. 9, the artist AT2 is selected as thestarting artist, and thus the character string for the artist AT2 isincluded in the starting icon 251, and the character strings for theartist group AG2 and AG3 including the artist AT2 are included in thefolder icons 252-1 and 252-2, respectively. The character strings forthe other artists AT3 and AT5 included in the artist group AG2 areincluded in the co-relational icons 253-1 and 253-2, respectively.

In the example illustrated in FIG. 9, the character string for theartist AT5 included in the co-relational icon 253-2 is shown in theparenthesis. The contents for the artist AT5 is not stored in thecontents file storing section 73 (nor in the contents informationdatabase 72), and, as shown in FIG. 9, character string is in a gray outdisplay.

In the artist list screen 211, when the artist link search button 224 isclicked through the operation of the mouse constituting the operationinput section 16 and the like, or, in the artist link tree screen 213,when the co-relational icon 253-1 is clicked, the artist AT3 representedby the co-relational icon 253-1 is configured to be the starting artist,and the artist link information for the starting artist is displayed onthe artist tree screen 213 based on the ALM database 71.

Namely, in the displayed artist link tree 213, characters of the artistAT3 regarded as a starting artist is displayed with a starting icon 251,the characters of the artist group AG2 in which the artist AG3 isincluded is displayed with a folder icon 352, and characters of otherartists (AT2 and AT5 grayed out in this case) included focused artistgroup (artist group AG2 in this case) are displayed with a correlationicon 253.

On this artist link tree screen 213, when the artist group AG3 isfocused, for instance, in response to a user's operation in theoperation input section 16, on the artist group list screen 212,scrolling is performed so that a folder icon for the artist group AG3 isarranged at a top position of the artist group list screen 212, and theicon is displayed with a color different from that of other artistgroups. On the other hand, a folder icon for the artist group AG2 not onfocus is displayed with the same color as other artist groups.

On the artist link tree screen 213, when the starting icon 251 is theco-relational icon 253 is selected (for instance, by double-clicking),for instance, in response to an operation of a mouse or the likeconstituting the user's operation input section 16, contents data forthe artist indicated by the selected icon is reproduced. In this step,the artist indicated by the co-relational icon 253 is regarded as astarting artist, and artist link information for the artist regarded asa starting artist is displayed with a tree format based on the ALMdatabase 71.

When the contents for the artist represented by the double-clicked iconare not stored in the PC1, the artist corresponding to the icon isconfigured to be the starting artist and the artist link information isdisplayed as the tree format, based on the ALM database 71, but thecontents is not reproduced.

In the artist link tree screen 213, in the area nearby the icons foreach of the artists, namely, in the left side of the starting icon 251,and in the right side of the co-relational icons 253-1 and 253-2, themusic site icons 261-1, 261-2, and 261-3 including the alphabeticalcharacter “m”, corresponding to the starting icon and the co-relationalicon, respectively. Hereinafter, the music site icons 261-1, 261-2, and261-3 are not distinguished from each other unless necessary and arereferred simply as music site icons 261.

The details of the music site icons 261 will be described below, inreference to FIG. 13. When each of the music site icons 261-1, 261-2,and 261-3 is selected, the search request for each artist correspondingto the respective icon is directly executed for the contents server 3,and thus, as illustrated in FIG. 9, in the area in which the artist linkmap editing screen 201 is displayed, the search result screen 301(described in reference to FIG. 17 below) for displaying the result ofthe search for the artist in the contents server 3 using the selectedartist name as the search key is displayed.

The request for searching the artist is directly executed for thecontents server 3, regardless of whether the contents for the artistcorresponding to the selected music site icons 261 is stored in thecontents file storing section 73 or not (namely, stored in the contentsinformation database 72 or not).

In the upper and lower portion of the folder icon 252 in the artist linktree screen 213, the scroll buttons 271-1 and 271-2 for shifting thedisplay to the folder icon representing other artist groups includingthe starting artist are arranged, respectively, and in the upper andlower portion of the co-relational artist icon 253, the scroll buttons272-1 and 272-2 for shifting the display to the co-relational iconsrepresenting other co-relational artists are arranged, respectively.

In the artist link tree screen 213, for example, through the operationsof the mouse constituting the operation input section 16, the order ofthe co-relational icons can be changed, and thus changing the priorityof the artists included in the artist group corresponding to the artistlink correspondence table 83 shown in FIG. 5 (the order information).

The basic function display screen 202, the display on which enabled bythe basic display processing section 56, is displayed as to surround thescreen such as the artist link map editing screen 201, therepresentation by which successively changes responding to the user'soperations, or in the outer area of the screen.

The basic function display screen 202 includes the volume button 281 foradjusting the volume, fetching button 282 for fetching the contents (orstoring through encoding) from the CD and the like, the transfer button283 for transferring the contents, play list, and the like to the PD7,the music site button 284-1 for accessing the music site (namely, thecontents server 3). The basic function display screen 202 furtherincludes the music community button 284-2 for accessing the externalserver via the network 2 for communicating other users using thecontents, the reproduce button 285 for specifying to reproduce when thecontents is not reproduced and specifying to pause when the contents isreproducing, the stop button 286 for specifying to reproduce when thecontents is reproducing. The basic function display screen 202 alsoincludes the “behind” button 287 for specifying one contents before thereproducing contents, the “ahead” button 288 for specifying one contentsafter the reproducing contents, and an exhibition section 289 forexhibiting the contents name, artist name, images, and the like inreproducing.

The editing process for the artist link information in the PC1 executedby referring to the artist link map editing screen 201 is describedbelow, in reference to the flow charts shown in FIGS. 10 to 12.

When the user operates the operation input section 16, and specifies theartist link editing by the operation, the artist link map editing screen201 shown in FIG. 9 is displayed through the control of the artist linkGUI control section. For example, the user selects, by operating theoperation input section 16, as represented by the cursor 221, in theartist list screen 211, the icon for the artist AT4, selects, in theartist group list screen 212, the icon for the artist group AG2 to whichthe artist AT4 is added, and then clicks the button 231 for adding theartist group.

In step s101, the artist link GUI control section 52 determines whetherthe addition of the artist to the artist group is instructed or not.When the operation signal corresponding to the click of the button 231is input from the operation input section 16, the artist link GUIcontrol section 52 determines the instruction for adding the artist tothe artist group in step S101, and proceeds to the step S102.

In step s102, the artist link GUI control section 52 enables the editingof the artist link correspondence table 83. The artist link processingcontrol section 53 controls the database access processing section 54,adds the artist information to the selected artist group in the artistlink correspondence table 83. In the artist link correspondence table83, the artist ID for the artist AT4 is added and registered byco-relating the ID to the artist group ID for the artist group AG2. Theupdated information in the artist link correspondence table 83 isprovided to the artist link GUI control section 52.

In step s103, the artist link GUI control section 52 provides theupdated information in the artist link correspondence table 83 from theartist link processing control section 53 to the artist link displayprocessing section 51.

In step s104, the artist link display processing section 51, based onthe updated information in the artist link correspondence table 83,re-draws the artist link map editing screen 201.

Thus, in the artist group list screen 212, the artist icon for under theartist AG2 is additionally displayed in the folder for the artist groupAT4, and in the artist icons for the artist AT2, AT3, and AT5.

In the artist link tree screen 213, the display includes theco-relational icon for the artist AT4 (not shown) added to theco-relational icons 353-1 and 353-2 to which the character strings forother artists AT3 and AT5 included in the artist group is co-related tothe folder icon 252-1 to which the artist group AG2 including the artistAT2 or the starting artist is co-related via the line.

Although in the case described above, the order information in theartist group is configured to be the lowest, the order can be configuredfor the highest and the intermediate.

As described above, the artist link tree screen 213 is immediatelyreflected respectively to the editing for the artist link informationexecuted in the artist list screen 211 and the artist group list screen212.

In step s101, when the addition of the artist to the artist group is notdetermined to be instructed, the step proceeds to the step S105.

In step s105, the artist link GUI control section 52 determines whetherthe deletion of the artist from the artist group is instructed or not.In the artist group list screen 212 in the artist link map editingscreen 201 shown in FIG. 9, for example, by the use's operation of theoperation input section 16, so that the cursor 241 is displayed on theicon for the artist AT4 included in the artist group AG3 (or the statein which the icon for the artist AT4 is selected is enabled), thedeleting button 243 is clicked.

When the operation signal corresponding to the click of the deletingbutton 243, the artist link GUI control section 52, in step s105,determines the instruction for the deletion of the artist from theartist group, and the step is proceeded to the step s106.

In step s106, the artist link GUI control section 52 controls the artistlink processing control section 53, and enables the editing of theartist link correspondence table 83. The artist link processing controlsection 53 controls the database access processing section 54, andenables the deletion of the information for the selected artist from theselected artist group in the artist link correspondence table 83. In theartist link correspondence table 83, the information in which the artistID for the artist group AG3 is co-related to the artist ID for theartist AT4 are deleted. The updated information in the artist linkcorrespondence table 83 is provided to the artist link GUI controlsection 52.

In step s107, the artist link GUI control section 52 provides theupdated information in the artist link correspondence table 83 from theartist link processing control section 53 to the artist link displayprocessing section 51.

In step s108, the artist link display processing section 51, based onthe updated information in the artist link correspondence table 83,re-draws the artist link map editing screen 201.

Thus, on the display section 17, the artist group list screen 212, theartist link map editing screen 201 in the artist link tree screen 213,in which the link of the artist AT4 to the artist group AG3 iscancelled, are displayed.

In step s101, when the adding of the artist to the artist group isdetermined to be instructed, and furthermore, in step s105, the deletionof the artist from the artist group is determined to be instructed, there-drawing of the artist link map editing screen 201 executed in steps104 is executed during the re-drawing of the artist link map editingscreen 201 in step s108.

In step s105, when the deletion of the artist from the artist group isdetermined to be not instructed, the step proceeds to the step S109shown in the FIG. 11. In step s109, the artist link GUI control section52 determines whether the addition of the new artist group is instructedor not. For example, in the artist group list screen 212 in the artistlink map editing screen 201 shown in FIG. 9, when the button 242 foradding the artist group is clicked, under the control by the artist linkGUI control section 52, the display of the artist group, the name ofwhich not configured, is enabled by the artist group list displayprocessing section 103.

Then, the user inputs the artist group name (for example, AG4) throughkeyboard and the like constituting the operation input section 16.During the process, the user can arbitrarily input the group name. Forexample, when the user generates the group for the artists who recordedmusic under the same music producers, the user may input “so and soproject” as the artist group name, or when the user generates the groupfor the ballet music, the user may input “ballet” as the artist groupname. The user can specify the group name when generating the new artistgroup, so that the parameter for the co-relation among the artistsincluded in the artist group is identified by the user.

An operation signal corresponding to addition of the new artist group(artist group AG4) is inputted from the operation input section 16, theartist link GUI control section 52 determines that addition of a newartist group is instructed in step S108, and system operation proceedsto step S110.

In step S110, the artist link GUI control section 52 controls and makesthe artist link processing control section 53 execute an operation forediting the artist group list table 82. More specifically, the artistlink processing control section 53 controls the database accessprocessing section 54 to add information for the specified artist groupin the artist group list table 82. In this step, for instance, a name(AG4) for the artist group AG4 and an artist ID (e.g., AGID_4) are addedin the artist group list table 82. In the case described above, noartist has been added in the artist group AG4, an operation for editingthe artist link correspondence table 83 is not performed. Updatedinformation for the artist group list table 82 is supplied to the artistlink GUI control section 52.

In step S111, the artist link GUI control section 52 supplies theupdated information for the artist group list table 82 from the artistlink processing control section 53 to the artist link display processingsection 51.

In step S112, the artist link display processing section 51 re-draws theartist link map editing screen 201 based on the updated information forthe artist group list table 82.

With the operation, the artist group list screen 212 with icons for theartist groups AG2 and AG3 shown in FIG. 9 and an icon for the artistgroup AG4 newly added therein is displayed in the display section 17.

In step S109, when it is determined that addition of a new artist grouphas not been instructed, the processing proceeds to step S113. In stepS113, the artist link GUI control section 52 determines whether deletionof an artist group has been instructed or not. For instance, in theartist group list screen 212 in the artist link map editing screen 201shown in FIG. 9, a delete button 243 is clicked by a user operating theoperation input section 16 in the state in which a cursor 241 isoverlaid on an icon for the artist group AG3 (namely, in the state wherean icon for the artist group AG3 has been selected).

When the delete button 243 is clicked and a corresponding operationsignal is inputted from the operation input section 16, the artist linkGUI control section 52 determines, in step S113, that deletion of theartist group has been instructed, and processing proceeds to step S114.

In step S114, the artist link GUI control section 52 controls and makesthe artist link processing control section 53 execute an operation forediting the artist group list table 82. In other words, the artist linkprocessing control section 53 controls and makes the database accessprocessing section 54 execute an operation for deleting the currentlyselected artist group from the artist group list table 82. For instance,in this step, the name (AG3) of the artist group AG3 and the artistgroup ID (AGID_3) are deleted from the artist group list table 82 shownin FIG. 4.

in step S115, the artist link GUI control section 52 controls and makesthe artist link processing control section 53 execute an operation forediting the artist link correspondence table 83. Namely, the artist linkprocessing control section 53 controls and makes the database accessprocessing section 54 execute an operation for deleting information forthe currently selected artist group from the artist link correspondencetable 83. For instance, all of information corresponding to the artistgroup ID (AGID_3) for the artist group AG3 is deleted from the artistlink correspondence table 83 shown in FIG. 4. Updated information forthe ALM database 71 is supplied to the artist link GUI control section52.

In step S116, the artist link GUI control section 52 supplied theupdated information for the ALM database 71 from the artist linkprocessing control section 53 to the artist link display processingsection 51.

In step S117, the artist link display processing section 51 re-draws theartist link map editing screen 201 based on the updated information forthe ALM database 71.

In response to the operation above, of the icons for the artist groupsAG2 and AG3 shown in FIG. 9, the artist link map editing screen 201including the artist group list screen 212 from which the icon for theartist group AG3 has been deleted and the artist link tree screen 213 isdisplayed in the display section 17.

When it is determined in step S109 that addition of a new artist grouphas been instructed and also it is determined in step S113 that deletionof an artist group has been instructed, re-draw of the artist link mapediting screen 201 performed in step S112 and re-draw of the artist linkmap editing screen 201 in step S117 are executed simultaneously.

When it is determined in step S113 that deletion of the artist group hasnot been instructed, processing proceeds to step S118 shown in FIG. 12.In step S118, the artist link GUI control section 52 determines whetheran operation for writing out artist link information has been instructedor not. For instance, in the artist group list screen 212 in the artistlink map editing screen 201 shown in FIG. 9, in the state in which thecursor 241 is overlaid on the desired artist groups AG2 and AG3 (forinstance, in the state where icons for the artist groups AG2 and AG3 areon selection), a user clicks the write out button 245 by operating theoperation input section 16.

When an operation signal is inputted from the operation input section 16in response to an operation of clicking the write out button 245, theartist link GUI control section 52 determines in step S118 that anoperation has been instruction for writing out the artist linkinformation, and processing proceeds to step S119.

In step S119, the artist link GUI control section 52 controls and makesthe artist link processing control section 53 execute an operation forwriting out the artist link information for the artist group currentlyon selection from the ALM database 71 in a file. More specifically, theartist link processing control section 53 controls and makes thedatabase access processing section 54 write out artist link informationfor the artist groups AG2 and AG3 from the ALM database 71, forinstance, in the XML file and store the artist link information in thestorage section 19 of the PC1. It is to be noted that the file format isnot limited to the XML file.

As described above, the artist link information is written out as an XMLfile, and therefore the written-out artist link information can betransferred to another PC1. The artist link information can be fetchedat the other PC1 and can be used as described below.

In step S118, the artist link GUI control section 52 determines that nooperation for fetching artist link information has been instructed, theprocessing proceeds to step S120.

In step S120, the artist link GUI control section 52 determines whetheran operation for fetching artist link information has been instructed.For instance, in the artist group list screen 212 of the artist link mapediting screen 201 shown in FIG. 9, a user clicks the fetch button 244by operating the operation input section 16.

In response to the clicking operation, a window (a slave screen) isdisplayed for promoting selection of a file is displayed on the artistlink display processing section 51. Then the user selects an XML file tobe fetched with a mouse or the like constituting the operation inputsection 16.

When an operation signal corresponding to a selected XML file isinputted, the artist link GUI control section 52 determines in step S120that an operation for fetching a file has been instructed, andprocessing proceeds to step S121.

In step S121, the artist link GUI control section 52 controls the artistlink processing control section 53, and executes an operation forupdating the ALM database 71 in the selected XML file. Namely, theartist link GUI control section 52 fetches the selected XML file, andmerges the artist link information described in the XML file with theexisting artist link information (in the ALM database 71). In otherwords, the artist link processing control section 53 controls thedatabase access processing section 54 to add, of the artist linkinformation described in the XML file, artist link information notincluded in the existing artist link information (in the ALM database71) (for instance, artist information, artist group information, andcorrespondence between artists and artist groups). The updatedinformation in the ALM database 71 is supplied to the artist link GUIcontrol section 52.

In step S122, the artist link GUI control section 52 supplies theupdated information for the ALM database 71 from the artist linkprocessing control section 53 to the artist link display processingsection 51.

In step S123, the artist link display processing section 51 re-draws theartist link map editing screen 201 in response to an operation forediting the ALM database 71 by the artist link GUI control section 52.With the operation, displayed in the display section 17 is the artistlink map editing screen 201 in which an artist added based on thefetched artist link information or an icon corresponding to the addedartist or artist group is added.

When it is determined in step S120 that an operation for fetching a filehas not been instructed, processing proceeds to step S124. In step S124,the artist link GUI control section 52 determines whether termination ofthe operation for editing the artist link information has beeninstructed. For instance, the user clicks the artist link editingterminate button 214 provided in an upper portion of the artist linktree screen 213 in the artist link map editing screen 201 shown in FIG.9.

In response to an operation for clicking the artist link editingterminate button 214 performed by the user with the operation inputsection 16, the artist link GUI control section 52 determines in stepS162 that termination of an operation for editing the artist link hasbeen instructed, and terminates display of the artist link map editingscreen 201. With this operation, the operation for editing the artistlink information is terminated.

When it is determined in step S124 that termination of the operation forediting the artist link has not been instructed, processing flows backto the step S101 shown in FIG. 10, and the processing steps after thestep S101 are repeated.

Operations for adding and deleting an artist to and from an artistgroup, operations for adding and deleting an artist group, andoperations for writing out artist link information and fetching theartist link information are described above as representatives of theoperations for editing artist link information. However, other editorialoperations such as addition and deletion of an artist to and from theartist group list table 81, an operation for changing an order ofpriority of artists in an artist group in the artist link correspondencetable 83 can be performed similarly.

As described above, the artist link information generated based ondetailed metadata can be edited according to user's operations, andartist link information prepared by the user's friend or those providedby a server providing artist link information can be fetched, andtherefore not only information for artist with the contents registeredin the contents information database 72, but also information of artistswith the contents not registered in a user's my library can be displayedin the artist link map editing screen 201.

Therefore, the user can know artists with the contents not known to theuser, and also those not known to the user. Furthermore, even when auser does not have contents relating to a starting artist or relatedartists, by operating the music site icons 261 displayed at the side ofthe starting artist or the related artists in the artist link treescreen 213, the user can directly access the contents server 3 to searchfor a desired artist as described below.

Then an operation for searching contents directly from the contentsserver 3 in the artist link tree screen 213 represented by the PC1 isdescribed below with reference to the flow chart shown in FIG. 13.

In the display section 17, the artist link map editing screen 201 shownin FIG. 9 is displayed according to control by the artist link GUIcontrol section 52. For instance, the user selects a music site icon261-3 displayed at the right side of the correlation icon 253 with thecharacters of artist AT5 grayed out by operating the operation inputsection 16. Although not described below, the description above is alsoapplicable to music site icons 261 for other artists (AT2 or AT3).

When an operation signal is inputted from the operation input section 16in response to selection of the music site icon 261-3, the artist linkGUI control section 52 determines that the music site icon 261-3 hasbeen selected, namely that data search in the contents server 3 has beeninstructed. In step S201, the artist link GUI control section 52controls and makes the artist link processing control section 53 toacquire an artist name corresponding to the music site icon 261-3(artist AT5 in the current case) from the ALM database 71 and supply theartist name to the artist search control section 55.

In step S202, the artist search control section 55 generates data for ademand of search suing the acquired artist. For instance, when theartist name is “XXXXXX”, the artist search control section 55 generatesthe search URL shown in FIG. 14 as data for a demand of data searchusing the artist name of “XXXXXX” to the contents server 3.

FIG. 14 shows the search URL of“http://music_site.jp/servlet/ArtistFinder?TEMPLATE-SS_ArtLinkSrchRslt.htm&INTERVAL=30& Name_WORD=XXXXXX” which is the search URL when theartist name is “XXXXXX”. In the URL above, “music_site. jP” represents,for instance, a URL of the contents server 3. This search URL is datafor demanding search for the artist name of “XXXXXX” to the contentsserver 3.

The artist search control section 55 supplies the generated searchdemand data (namely, the search URL) to the network communicationcontrol section 58. In step S203, the network communication controlsection 58 controls and makes the network communication section 59 sendthe search demand data to the contents server 3. The networkcommunication section 59 sends the search demand data via thecommunication section 20 and the network 2 to the contents server 3.

The communication section 20 in the contents server 3 receives thesearch demand data from the PC1 via the network 2, and supplies the datato the CPU 11. The CPU 11 searches names of various artists with thecontents stored in the contents database 4 using the artist namedescribed in the search demand data to the contents server 3 as akeyword for the data search, and sends a result of data search using theartist name via the network 2 to the PC1 by controlling thecommunication section 20.

The network communication section 59 in the PC1 receives a result ofdata search via the a communication section 20 and the network 20 fromthe contents server 3, and supplies the received result of data searchto the artist search control section 55.

FIG. 15 shows a result of data search with the artist name of“Sakamoto”.

<?xml version=“1.0” encoding=“Shift—jis”?> in the first line indicatesthat the search result is described with XML version 1.0 and encoded byShift—jis. <search_result> in the second line and </search_result> inthe 36-th line indicates that the search result extends from the thirdline up to the 35-th line.

<org_name_word> Sakamoto </org_name_word> in the third line indicatesthat the search key is “Sakamoto”. <all_count>5</all_count> in thefourth line indicates that five artists stored in the contents database4 are hit. <begin_index>1</begin_index> in the fifth line and<end_index>5</end_index> in the sixth line indicate that the first oneis a first artist and the last one is a fifth artist.<artist_count>5</artist_count> in the seventh line indicates that theartist is five. <page_count>1</page_count> in the eighth line indicatesthat description of the search result extends only on one page.

<item> in the ninth line and </item> in the 35-th line indicate that asection from the 10-th line to the 34-th line is a search result foreach hit item (artist). <artist> in the tenth line and </artist> in the14-th line indicate that a search result for one of the five artists isdescribed from the 11-th line to the 13-th line.

<url>http://music_site.jp/artist/80307744/70000417/<url> in 11-th linerepresents an address of a page for the artist in the 12-th line in thecontents server 3. <art name> Sakamoto Hanako</art_name> in the 12-thline indicates that a name of the artist hit as a result of data searchusing “Sakamoto” is “Sakamoto Hanako”. <entry>12<entry> in the 13-thline indicates that the number of contents for “Sakamoto Hanako” is 12.

<artist> in the 15-th line and </artist> in the 19-th line indicate thata search result for one of the five artists is described in a sectionfrom the 16-th line to the 18-th line.<url>http://music_site.jp/artist/80311316/VIA008957/</url>in the 16-thline represents an address (URL) of a page for the artist in the 17-thline in the contents server 3. <art_name> Sakamoto Taro,/art_name>indicates that a name of the artist hit as a result of data search using“Sakamoto” is “Sakamoto Taro”. <entry>8</entry> in the 18-th lineindicates that the number of contents corresponding to “Sakamoto Taro”is 8 in the contents server 3.

<artist> in the 20-th line and </artist> in the 24-th line indicate thata search result for one of the five artists is described in a sectionfrom the 21-th line to the 23-th line.<url>http://music_site.jp/artist/80312087/WMG4365/</url> represents anaddress (URL) of a page for the artist in the 22-th line in the contentsserver 3. <art_name> Mr. Sakamoto </art_name> in the 22-th lineindicates that a name of the artist hit as a result of search using“Sakamoto” is “Mr. Sakamoto”. <entry>27</entry> in the 23-th lineindicates that the number of contents corresponding to “Mr. Sakamoto” is27 in the contents server 3.

<artist> in the 25-th line and </artist>in the 29-th line indicate thata search result for one of the five artists is described in a sectionfor the 26-th line to the 28-th line.<url>http://music_site.jp/artist/80311556/UMLG00559/</url> represents anaddress (URL) of a page for the artist in the 27-th line in the contentsserver 3. <art name> Sakamoto Hanako </art_name> in the 27-th lineindicates that a name of the artist high as a result of search using“Sakamoto” is “Sakamoto Sakako”. <entry>241</entry> in the 28-th lineindicates that the number of contents corresponding to “Sakamoto Sakako”is 241.

<artist> in the 30-th line and </artist> in the 34-th line indicate thata search result for one of the five artists is described in a sectionfrom 31-th to the 33-th line.<url>http://music_site.jp/artist/80312032/EMI00271/</url> represents anaddress (URL) of a page for the artist in the 32-th line in the contentsserver 3. <art_name> Suzuki Gen and Skamoto Hanako </art name> indicatesthat names of the artists hit as a result of search using “Sakamoto” is“Suzuki Gen and Sakamoto Sakako”. <entry>12</entry> in the 33-th lineindicates that the number of contents corresponding to “Suzuki Gen andSakamoto Sakako” is 12.

The XML data described above is sent as a search result from thecontents server 3.

Again referring to FIG. 13, in step S204, the artist search controlsection 55 generate a displaying URL (hereinafter, refers to as adisplay address URL as a display demand data specifying the address inaccordance with the search result. Namely, the artist search controlsection 55 determines the number of hit items based on a figuredescribed in the <all_count>5</all_count) in the fourth line of thesearch result shown in FIG. 15, and decides the display address URL inresponse to a case where the number of hit items is one, a case wherethe number of hit items is two or more, or a case where the number ofhit items is zero as shown in FIG. 16.

When the number of hit items is one, namely, for instance, when only“Sakamoto Hanako” is hit as a result of search result shown in FIG. 15,<url>http://music_site.jp/artist/80307744/70000417/</url> which is a URLin the 11-th line of the tag <artist> in the 10-th line shown in FIG. 15(namely a URL of a page for the artist name “Sakamoto Hanako”) is usedas a URL address for display.

When the number of hit items are two or more, a URL searched using anartist name as a search key (when the artist name is “XXXXXX”,“http://music_site.jp/servlet/ArtistFiner?TEMPLATE-ss_ArtLinkSrch_Rslt.html&INTERVAL=30&Name_WORD=XXXXXX)is used as the display address URL. In the case shown in FIG. 15, thenumber of hit items is five, and therefore the description is applicableto this case.

When the number of hit items is zero (namely, when nothing is hit), likein the case where the number of hit items is two or more, the URLsearched using an artist name as a search key (when the artist name is“XXXXXX”,“http://music_site.jp/servlet/ArtistFiner!TEMPLATE-ss_ArtLinkSrch_Rslt.html&INTERVAL=30&Name_WORD=XXXXXX)is used as the display address URL.

Again by referring to FIG. 13, as the artist search control section 55supplies the decided the display address URL to the networkcommunication control section 58, in step S205, the networkcommunication control section 58 controls the communication controlsection 58 so that the display address URL is sent to the contentsserver 3. The network communication section 59 sends the display addressURL via the communication section 20 and the network 2 to the contentsserver 3.

The communication section 20 in the contents server 3 receives thedisplay address URL via the network 2 from the PC1, and supplies thedisplay address URL to the CPU 11. The CPU 11 sends, in step S222, datafor configuring a screen corresponding to the display address URL (suchas image data or html data) via the network 2 to the PC1 by controllingthe communication section 20.

The network communication section 59 in the PC1 receives the data fromthe contents server 3 via the communication section 20 and the network2, and supplied the received data to the basic GUI control section 57.In step 8206, the basic GUI control section 57 controls the basicdisplay processing section 56 so that a search result screen 301corresponding to the data from the contents server 3 is displayed in thedisplay section 17 together with the basic function display screen 202.

Because of the operation, for instance, when the number of hit items isone, the search result screen 301 is displayed in the display section17. When the number of hit items is two or more, the search resultscreen 301 shown in FIG. 18 is displayed in the display section 17. Whenthe number of hit items is zero, the search result screen 301 shown inFIG. 19 is displayed in the display section 17.

FIG. 17 illustrates an example of a display screen displayed in thedisplay section 17. It is to be noted that the same symbols are assignedto sections corresponding to those in the display screen shown in FIG.9.

In the area capable of being switched to another screen in the displayscreen shown in FIG. 17, the search result screen 301 provided from thecontents server 3 when the number of hit items is one (for instance,when only the artist name of “Sakamoto Hanako” is hit in FIG. 15) isdisplayed.

A title showing that the current screen is a screen from the contentsserver 3 is shown at an uppermost portion of the search result screen301. Provided under the title at a diagonally left portion are a returnbutton 321 used to returning to a preceding page, an advance button 322for advancing to a next page, a stop button used for stopping display,an update button 324 for updating display, and a home position buttonused for returning to display to a prespecified home position.

Furthermore provided under the buttons described above is a tool bar 311showing usage tools of music site. Shown on the tool bar 311 is “Carttool” used for temporally keeping contents to be purchased or the lineon board, “Login tool” used for logging in a music site, “Simpleclearance registration tool” used for registration for simple clearancefor purchased contents, and “Help tool”. The user can select any of thetools to move to a page for use of the page.

Provided under the tool bar 311 is a category bar 312 configured withtags displaying contents by each category. Displayed on the category bar312 are tags, namely “Home” for returning to the starting page, “Searchaccording to Japanese alphabet” used for displaying contents accordingto a selected Japanese alphabet, “Japanese music” used for displayingonly contents of Japanese music, “Western music” used for displayingonly western music, “Animation for displaying only contents relating tosongs for animation program, and “Topics” used for displaying onlycontents picked up in a specific program. By selecting any of the tags,a user can have contents belong to a desired category displayed on thescreen.

A search bar 313 is provided under the category bar 312. Shown on thesearch bar 313 are a “artist name search button” used for searching byusing a character input space, or a word input in the character inputspace as an artist name, an “album name search button” used forsearching an album by using a word input into the character input spaceas an album name, a “song title search button” used for searching byusing a word input into the character input space as a song title, and a“keyword search button” used for searching a word input into thecharacter input space as a keyword. A user can search for data belongingto a desired category by inputting a work in the character input spaceand selecting a desired search button.

Provided under the search bar 313 are a menu display section 314 inwhich such information as search by category, a tutorial, a method ofusing net cash or a music coupon, ranking of music pieces in thecontents server 3 are displayed, and a search result displaying section315 in which a search result for the artist name instructed from theartist link map editing screen 201. In the right side from the searchresult screen 301, a scroll bar 316 for displaying the search resultscreen 301 in the scrollable state is displayed.

FIG. 17 shows a case in which the search result display section 315provided when the number of items is one is displayed, and the page forthe artist name of “Sakamoto Hanako” shown in<url>http://music_site.jp//artist/80307744/70000417/</url> is displayedin the search result display section 315.

In the search result display section 315, artist information for“Sakamoto Hanako” including images of representative albums, genreinformation, other recommended information, and detailed information, alist of albums and single pieces, and a current ranking for contentscorresponding to “Sakamoto Hanako” are shown in the descending order.The underlined characters indicate that there is provided a link formoving a page in which detailed information corresponding to a selectedcharacter is displayed in detail.

AS described above, since a page corresponding to music site icons 261selected by a user is displayed, the user can check contents for adesired artist or purchase the contents easily.

FIG. 18 illustrates another example of a display screen displayed in thedisplay section 17. In the area capable of being switched to anotherdisplay screen in the display screen shown in FIG. 18, the search resultscreen 301 for the case shown in FIG. 15 when the number of hit items isfive.

In the example shown in FIG. 18, a result of search for artists searchedwith the artist name of “Sakamoto” (one to five items among the fiveitems) is displayed in the search result display section 315. Morespecifically, displayed in the search result display section 315 areartists and contents for the artists, namely “Sakamoto Hanako 12titles”, “Sakamoto Taro 8 titles”, “Mr. Sakamoto 27 titles”, “SakamotoSakako 241 titles”, and “Suzuki Gen and Sakamoto Sakako 12 titles”.

Each artist name is underlined, and a network link is provided so that auser can get a page for each artist as shown, for instance, in FIG. 17by selecting the artist name.

With the configuration, when a user selects a name of a desired artistfrom among the plurality of searched artists, as described above withreference to FIG. 17, a page for the desired artist is displayed, a usercan easily check contents of a desired artist or purchase the contents.

FIG. 19 shows another example of the display screen displayed in thedisplay section 17. In the area capable of being switched to anotherdisplay screen in the display screen shown in FIG. 19, the search resultscreen 301 for a case where the number of hit items is zero, namelywhere no item is hit is displayed.

In the example shown in FIG. 19, a “AAA not found” is displayed as aresult of search for artist names according to the artist name of AAA”.

Therefore, the user can easily know that a desired artist is notregistered in the contents server 3. In this case, the user can operate,for instance, the return button to restore the artist link map editingscreen 201 and reproduce contents for another desired artist.

As described above, in the artist link map editing screen 201, musicsite icons corresponding to each artists are provided near icons for thestarting artist or for the related artists. Because of theconfiguration, the user can demand search for a corresponding artistname to the contents server 3 only by selecting (clicking on) a desiredmusic site icon.

As described above, a user can easily know an artist as a starting pointfor data search and other correlated artists only by selecting a musicsite icon. The user can also purchase of contents for the startingartist or other correlated artists.

The starting artist or the correlated artists, icons of which aredisplayed in the artist link map editing screen 201 may be artists withthe contents not stored in the contents file storing section 73, becausethe artist link information can also be acquired, for instance, from auser's friend. In other words, a user can search for informationconcerning an artist whom the user know first by checking the artistlink information shown in the artist link map editing screen 201 fromthe contents server 3 any time, and furthermore the user can purchasethe contents according to the necessity.

Because of the functional configuration as described above, purchase ofcontents not owned by users can be promoted, which contributes to salespromotion of contents.

The description above assumes a case in which an icon for a music siteis provided at the side of ions for a starting artist or for correlatedartists, but also a configuration is allowable in which a music site ionis provided at the side of folder icons for the artist groups. In thiscase, data search using an artist group name can be demanded to thecontents server 3.

The description above assumes a case in which artist link informationfor artists relating to contents is displayed on the screen, but thedisplayed item is not limited to the artist link information for artistscorrelated to contents, and a reason for correlation may be displayedvisually with a tree format. This scheme can also be applied tocontents. For instance, when a starting contents, a category group withthe starting contents included therein, and other correlated contentsincluded in the category group or the like are displayed, a music siteion is displayed in correspondence to each contents. In thisconfiguration, data search can be performed according to thecorresponding contents name in the contents server 3, only by selectingthe music site icons 261 and therefore a user can acquire a desiredcontents from the contents server 3.

The configuration described above displays, between a starting artistand artists correlated to the starting artist, an artist groupindicating the correlation in the artist list map preview screen 211 inwhich artist link information for the starting artist described above isdisplayed with a tree format, but the present invention is not limitedto the configuration, and the artist group is not always demanded to bedisplayed between a starting artist and artists correlated to thestarting artists. For instance, the configuration is allowable in whichcorrelated artists are displayed at the side of a starting artist in thearrayed state, and furthermore an artist group is displayed in the rightside from the correlated artists.

The description is made above by referring to a case where movingpictures or music contents are provided, but the present invention isnot limited to display of moving pictures or music contents, and is alsoapplicable to the contents such as applications.

Furthermore, although the description above assumes a case where theinformation processing device is a personal computer such as the PC1shown in FIG. 2, but the present invention is not limited to the use ofthe PC1, and is applicable to a PD7 which s a portablerecording/reproducing device, a mobile phone, other types of PDA(Personal Digital Assistance) equipment, a reproducing device such as anAV (Audio Visual) equipment, electronic home appliances such as CE(Consumer Electric) equipment.

The description above assumes a case in which a search demand using anartist name is sent to the contents server 3 providing music contents,but the search demand is not limited for demanding to be sent to thecontents server 3, and may be sent to other servers allowing data searchusing an artist name as a search key.

The series of operations described above may be executed by hardware,but also be executed by software.

When the serried of operations are executed by software, variousfunctions can be executed with a computer in which a programconstituting the software is incorporated in a dedicated hardware or byinstalling various types of programs in a computer. The programs areinstalled, for instance, in a general-purpose personal computer from anetwork or a recording medium.

The recording medium includes not only package media separated from amain body of a computer and distributed to users for providing programs,but also a ROM 12 or a hard disk incorporated in the storage section 16,each of which is provided to a user after the recording medium ispreviously incorporated in the device, and in which demanded programsare stored. The recording medium includes such as a magnetic disk(including a flexible disk), an optical disk (CD-ROM (Compact Disc-ReadOnly Memory), a DVD (Digital Versatile Disc), a magneto optical disk (MD(Mini-Disc) (trademark)), or a removable medium 22 made of asemiconductor memory, in each of which a program is recorded.

The steps described in the specification and illustrated in the flowcharts are not limited for demanding to be executed according to thedescribed or illustrated time-series, and furthermore may be executedconcurrently or discretely.

The term of system as used herein indicates a system including aplurality of devices as a whole.

It should be understood by those skilled in the art that variousmodifications, combinations, sub-combinations and alterations may occurdepending on design requirements and other factors insofar as they arewithin the scope of the appended claims or the equivalents thereof.

What is claimed is:
 1. An information processing device, comprising: astorage unit that stores attribute data representing specified attributeof contents and category data representing a category of the attributecorrelated to each other; a first display control unit that providescontrols for displaying information for a selected attribute and fordisplaying, in a categorized state, information for related attributescorrelated to the same category as that of the attribute on acorrelation display screen; and a demanding unit that demands datasearch by referring to the correlated attribute selected correspondingto information selected from among those displayed on the correlationdisplay screen to an information provision device.